CVE-2023-38123Network attack vector

Authentication bypass via unauthenticated password changes

Published May 3, 2024 · Updated Aug 2, 2024

Missing authentication in Inductive Automation Ignition 8.1.24 allows remote attackers to bypass authentication through password changes. The OPC UA Quick Client server configuration exposes password-change functionality without authenticating the request. Exploitation requires the target to visit a malicious page or open a malicious file, after which the attacker gains authenticated access to the system.

CVSS severity7.5
High
EPSS probability1.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in Inductive Automation Ignition 8.1.24 allows remote attackers to bypass authentication through password changes. The OPC UA Quick Client server configuration exposes password-change functionality without authenticating the request. Exploitation requires the target to visit a malicious page or open a malicious file, after which the attacker gains authenticated access to the system.

The record

CVE
CVE-2023-38123
Published
May 3, 2024
Updated
Aug 2, 2024
Vendor
Inductive Automation
Product
Ignition
Classifications
CWE-306, T1098
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 3, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=8.1.24

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Inductive Automation · Ignitionversion=8.1.24

Published CVSS scores

7.5Zero Day InitiativeCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1098Account Manipulation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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